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A removable compression cord with toggle adjustment compresses the load when necessary. Thermo-formed back panel and padded, contoured shoulder straps are comfortable and quick drying. 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The zippered main compartment opens wide at the top for easy access to clothing and larger items. Inside are four mesh pockets: one zippered pocket at the top, one pouch on each side of the bottom and a hydration pouch along the foam back. Tube ports on each side and elastic keepers on each shoulder strap accommodate left or right hydration-tube orientation . A small outer zippered pocket and three stretch mesh pouches provide plenty of quick-access external stowage. A lightly padded, double-layer base maintains lower load stability and enhances durability. External daisy chains and EXPED's exclusive Tool Blade combine to securely transport ice tools and other hardware. A removable compression cord with toggle adjustment compresses the load when necessary. Thermo-formed back panel and padded, contoured shoulder straps are comfortable and quick drying. Impulse 15 is sold with a lightweight waist strap; 20 and 30 liter versions with removeable, low-profile, padded hip belts, each with a small, zippered stretch pocket.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eAn over-the-top zipper gives wide-open access to the interior, which houses a zippered mesh pocket and two more open pockets in the lower corners for securing water bottles.\u003c\/li\u003e\n\u003cli\u003eA hydration reservoir can be hung in the interior and a port allows the tube to exit the pack.\u003c\/li\u003e\n\u003cli\u003eImpulse is built with super-durable 210-denier Robic HD ripstop nylon and the carbonate polyurethane coating gives it a 2,500mm water column rating for water resistance.\u003c\/li\u003e\n\u003cli\u003eA small, external zippered pocket on top gives quick access to sunscreen, lip balm, and other small items. Three mesh pockets, one on each side and one on the back, hold a wide variety of items, from water bottles and jackets to trekking poles and snacks.\u003c\/li\u003e\n\u003c\/ul\u003e"}

Exped Impulse Backpack

$159.00
Exped

Exped Impulse Backpack

$159.00

Grivet Members get back an estimated $16 on this item as part of their member rewards.

Maximum quantity available reached.

More from Exped

Impulse is a versatile companion for a wide range of ambitious day tours, from all-day trail runs to alpine mountaineering and day hiking. The zippered main compartment opens wide at the top for easy access to clothing and larger items. Inside are four mesh pockets: one zippered pocket at the top, one pouch on each side of the bottom and a hydration pouch along the foam back. Tube ports on each side and elastic keepers on each shoulder strap accommodate left or right hydration-tube orientation . A small outer zippered pocket and three stretch mesh pouches provide plenty of quick-access external stowage. A lightly padded, double-layer base maintains lower load stability and enhances durability. External daisy chains and EXPED's exclusive Tool Blade combine to securely transport ice tools and other hardware. A removable compression cord with toggle adjustment compresses the load when necessary. Thermo-formed back panel and padded, contoured shoulder straps are comfortable and quick drying. Impulse 15 is sold with a lightweight waist strap; 20 and 30 liter versions with removeable, low-profile, padded hip belts, each with a small, zippered stretch pocket.
  • An over-the-top zipper gives wide-open access to the interior, which houses a zippered mesh pocket and two more open pockets in the lower corners for securing water bottles.
  • A hydration reservoir can be hung in the interior and a port allows the tube to exit the pack.
  • Impulse is built with super-durable 210-denier Robic HD ripstop nylon and the carbonate polyurethane coating gives it a 2,500mm water column rating for water resistance.
  • A small, external zippered pocket on top gives quick access to sunscreen, lip balm, and other small items. Three mesh pockets, one on each side and one on the back, hold a wide variety of items, from water bottles and jackets to trekking poles and snacks.

How To Measure Your Shoe Size

Here are the best shoe size conversion charts - in US, UK, European, and inches, for men's, kid's and women's shoes. 
 
If you've ever wondered "What size shoe is a 38?" (It is a men's size 7.5 in the US) or "What is a size 40 in shoes?" (that'd be a US men's size 9.5), read on to learn how to measure shoe sizes in different countries.
 
How do you measure shoe size? It is possible to measure your own foot using a ruler or a Brannock device, but since our feet our three dimensional, this will only approximate your measurements. After you've measured your foot, try using our conversion charts below to see what your size is. Be mindful that different brands, like Altra running shoes vs. Brooks running shoes vs. Oboz hiking boots, maybe run slightly different in sizes. 
 
Women's Shoe Size Conversions
US Sizes Euro Sizes UK Sizes Inches CM
4 35 2 8.1875" 20.8
4.5 35 2.5 8.375" 21.3
5 35-36 3 8.5" 21.6
5.5 36 3.5 8.75" 22.2
6 36-37 4 8.875" 22.5
6.5 37 4.5 9.0625" 23
7 37-38 5 9.25" 23.5
7.5 38 5.5 9.375" 23.8
8 38-39 6 9.5" 24.1
8.5 39 6.5 9.6875" 24.6
9 39-40 7 9.875" 25.1
9.5 40 7.5 10" 25.4
10 40-41 8 10.1875" 25.9
10.5 41 8.5 10.3125" 26.2
11 41-42 9 10.5" 26.7
11.5 42 9.5 10.6875" 27.1
12 42-43 10 10.875" 27.6

Men's Shoe Size Conversions

US Sizes Euro Sizes UK Sizes Inches CM
6 39 5.5 9.25" 23.5
6.5 39 6 9.5" 24.1
7 40 6.5 9.625" 24.4
7.5 40-41 7 9.75" 24.8
8 41 7.5 9.9375" 25.4
8.5 41-42 8 10.125" 25.7
9 42 8.5 10.25" 26
9.5 42-43 9 10.4375" 26.7
10 43 9.5 10.5625" 27
10.5 43-44 10 10.75" 27.3
11 44 10.5 10.9375" 27.9
11.5 44-45 11 11.125" 28.3
12 45 11.5 11.25" 28.6
13 46 12.5 11.5625" 29.4
14 47 13.5 11.875" 30.2
15 48 14.5 12.1875" 31
16 49 15.5 12.5" 31.8
Big Kid Shoe Size Conversions (7 – 12 years)
US Sizes Euro Sizes UK Sizes Inches CM
3.5 35 2.5 8.625" 21.9
4 36 3 8.75" 22.2
4.5 36 3.5 9" 22.9
5 37 4 9.125" 23.2
5.5 37 4.5 9.25" 23.5
6 38 5 9.5" 24.1
6.5 38 5.5 9.625" 24.4
7 39 6 9.75" 24.8
Little Kid Shoe Size Conversions (4 – 7 years)
US Sizes Euro Sizes UK Sizes Inches CM
10.5 27 9.5 6.625" 16.8
11 28 10 6.75" 17.1
11.5 29 10.5 7" 17.8
12 30 11 7.125" 18.1
12.5 30 11.5 7.25" 18.4
13 31 12 7.5" 19.1
13.5 31 12.5 7.625" 19.4
1 32 13 7.75" 19.7
1.5 33 14 8" 20.3
2 33 1 8.125" 20.6
2.5 34 1.5 8.25" 21
3 34 2 8.5" 21.6

FAQ & Tips

  • What if I am between shoe sizes? We recommend you should size up, especially in active & sports shoes. This includes running shoes and hiking boots. 
  • Does 0.5 size make a difference in shoes? Yes, it certainly does! Wearing shoes that are too small can cause pain and injuries. Blisters, lose of toenails and bunions can all result from wearing shoes that are even 0.5 size too small. These are common ailments of beginner runners. 
  • Is one foot bigger than the other? It is common for people to have one foot that is slightly bigger than the other. Our tip is that you should buy shoes that fit the larger foot (buy pairs of shoes in the larger size of the two). 
  • Should shoes be tight or lose? Unfortunately, this is not a simple question. Shoes should not be too tight or too lose. You should be able to put a thumbs width at the end of your toe box, between your big toe and the pointy end of the shoe. You should also be able to snuggly fit your index finger between your heel and the back of the shoe. If you have not much (or not enough!) space in either of these areas, try a different size shoe. 
  • When should I try on shoes? A great tip for runners is to try on running shoes at the end of a work day. As you run, just like when you are on your feet for work, your feet swell. You will want to try on running shoes when your feet are at their largest. This allows them to still fit comfortably after a long distance run. 
  • What size shoe should I buy? This shoe chart is not a guarantee your shoes will fit. If you are in the area of Memphis, Tennessee, run on in to one of our running specialty & gear stores and our experienced fit experts will help you out!

Image below: A Brannock device is one tool run specialists use to measure shoe size. It can measure not only foot length, but also foot width. 

How to measure shoe size - Brannock Device

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